Skip to main content

This Site will be down for up to 3 hours on December 2, 2023 from 8 PM - 11 PM PST, to deploy an infrastructure update.

NetApp Knowledge Base

Fibre Channel dropout issue

Last Updated:

Applies to

  • ONTAP 8.2.3 or earlier
  • ONTAP 7-Mode


  • FC LUNs cannot access
  • Intermittently losing connectivity between 16Gb Fibre Channel (FC) adapters and the Brocade FC switch.
  • Errors logged in EMS are as follows:
[?] Fri Oct 24 13:34:54 BST [controller: fct_tpd_thread_1:]: STIO Adapter:0c AEN 0x8048 (RECV_ERROR) MboxStatus1 0xffff MboxStatus2 0x1
[?] Fri Oct 24 13:34:58 BST [controller: fct_tpd_thread_1:]: STIO Adapter:0c, found hung cmd:0xffffff01e8b305e0(state=7, flags=0x1, ctio_sent=1/2,RecvExAddr=0x124f30, OX_ID=0x6b3, RX_ID=0xffff,SID=0x10200, Cmd[2A])


Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.
Scan to view the article on your device